Air writing with searchlight beams



Patented Aug. 9, 1.927.4

.UNITED @STATES PATENT OFFICE. l

wLADmIn W. MITKEWICH',v'l'erasaooxLYN, NEW Yoan, 'AssIGNoR oF THm'rY-Tnm AND ONE-THIRD ran CENT To RICHARD VIToLo AND urinary-THREE AND oNn- THIBD PER CENT ro DANIEL 'ANDRE aoDIoNoFF; nora or Naw Yonx, N. Y.

' AIBLWRITING WITH SEARCHLIGHTBEAMS.

Application inea ,Nay 17, 192e.v serial No. 109,730.

The present invention relates-to la highly novel. yet simple means for forming words, letters, or characters in the ,airpat night by the employment of light beams.

Oneof the important objects of the presi ent invention is to provide a means of the above mentioned charm-ter wherein a spot'.

light is used in conjunction with reliectors for forming thedesired letters, words, or l0 characters in the air at night so that the figure, word', or character-thus formed will e visible for a considerable distance and Will attract considerable attention, thus possessing the necessary essentials for properly displaying an advertisement-` Another important object of the invention is to provide 'a means florsupporting the lreflectors in predetermined posi-tions in the air so that when the li ht raysor beams from the spot light are rawn onto the reflectors, the same will cooperate with one another to `orm the predetermined letter or word.

A further object of the invention is to provide a device of the above mentioned character which is simple in construction, inexpensive, strong, :md durable and further Well adapted to the purpose for which it is designed.

Other objects and advantages of the invention will become apparent during the course-of the following description taken in connection with the accompanying drawmg. In the accompanying drawing forming a part of this application and in which like numerals designate like parts throughout ,formed by the intercepting light rays of three spot lights.

Figure 5 is a view showing the same letter formed by a single spot light and re- 'iiectmg mlrrors arranged in a predetermined manner, and v y Figure 6 is a diagrammatic view showing the arrangement of some of the refiecting mirrors.

In the drawing, wherein for the purpose of illustration is shown the preferred emlight ray ..beams pass through the air in 1 dillerent 'directions and illuminating` the particles of dust and moisture in the air.

The invention further'hbmprises the provision of a plurality of reflecting mirrors,

the same being adapted to be suspended in` the air, and the manner in which each mirror is supported is clearly shown in Figure -bodiment of my invention, with reference l 3. With referencenow particularly to this figure, vit will be seen that the mirror 4 isv attached at its corners to the intermediate portions of the pair of spaced rods or wires 5 and 6 respectively, the endsof which are vattached to the parallelspaced -elongated rods or wires 7 and 8 respectively. The last mentioned pair of rods or Wires 7 and 8 are secured at their respective ends to the ends vof suitable cross bars `illustrated at 9 and these cross bars 'are supported transversely y of a pair of vertical standards or masts 10 and 11 respectigely as is shown ,more clearly in Figure 1. Each cross bar is secured to the mast or standard by means of a clamp illustrated .at 12 in Figure 3. -A -K As many of thesevpairswof rods or Wires '7 and v8 may extend between. one pair fof spaced standards or masts in spaced superstandards or masts-and `alst#"additional pairs of rods .0rwires 7 and 8 as. is readily obvious from the construction shown in Figuresland. l.' 'i f A series of reflectin mirrors such as are shown at 4 are adapte to be suspended between the rods 7 and 8 through the medium of the mirror supporting wires 5.x and 6 as is necessary to form a predetermined letter, figure, or w0rd,'and in certain instances, a refiector such asis shown at 13 is employedfor dividing the light rays which are projected onto said reflector. This type' of reflector comprises a pair of mirrors arranged in intersecting relation so that certain. of

the light rays will be directed to the right and left respectively. I l i Inthe prent instance, I haveshown the mirrors arranged in vsuch* a manner as to form the word light although :it is-,to bey understood that these. mirrors may be arranged in any other manner in order to foi-m' any other word which is tobe displayed. 'A A relatively large refiecting mirror 14 is s upported at an angle between the lower and next adjacent pair of spaced rods or wires" 7 and 8 as clearly shown in Figure 1- and of supporting rods or wires 7 oppositethe furthermore one end of thelowermost pair reflector 14 is 'inclined upwardly so as to merge with the adjacent end ofthe next adjacent air of rods or wires. A screen or shade suc as is shown at 15 is supported on the mast or standard 11 for stopping the light rays which are projected horizontally lfrom the refiecting mirror `14. A relatively' large spot light or other wurce of illumin agains'tthe refiecting mirror 14 and the sevation has its light beams directed vertically eral smaller mirrors -4`which are supported `betweenfthe wires lor rods '7 and 8 will receive the. light .rays or beams reflected from the mirror 14, and in turn these mirrors will direct. the light rays in the various directions illustrated 1n the dottedlines in 4Iigure 1 and'by'employing suitable screens or shades 16 at predetermined places on the wire supporting structure, the Alight rays or beams will be cut off so-that the word light will be Jformed by the light rays' or beams in the air by reason of the light rays illuminating r the particles of dust and moisture in the atmosphere.

In Fivure 5 of the drawing there is illustratedthe manner in which the letter K is formed wherein la single spot light 17 and a series of reiecting mirrors 18 and the screenson shades "fare" employed. The

manner in'which these mirrors intercept the s light ray's'or beams for forming' the aforementioned letter is readily obvious from the construction shown in v Figure 5 and therefore a detailed description thereof is thought unnecessary. v

It will thus be seenfrom the foregoing description, that I have provided a highly novel advertising device Vfor displaying swords, letters, figures, or other characters ment of my inventionl it is to be understood that minor changes in the size, shape and arrangement maybe made without departing fromthespirit and scope of the appende claims..

Having thus described the invention, what I claim as new and desireto secure by Letters Patent is :f

1. In an apparatus of the character describeda source of light, reiectors arranged in pre etermined spaced relation with respect to said source o-light and with re,-l

spect to each other for mtercepting and transmitting 4the light rays projected from said source in different directions, whereby predetermined characters are formed in the air.

2.' In ang' apparatus of the characterdescribed, a source of light, reflectors arranged in predetermined spaced relation with respect to said sourcel -ot light and with respect toeach other for intercepting and transmitting the' light rays projected from said sourcevin dierent directions, whereby predetermined characters are formed in the air, and means at the ends ofthe characters for preventing the further projection of said light rays'. A v

f3, In anapparatus of'the character described a source of light reflectors arranged in `predetermined spaced relation with respect to said source of light and with respect lto each other for intercepting and transmitconsisting in transmitting light beams in the air from different `positions and in different directions, and arranging the light transmitting means so that the beams transmitted form'the outline of a character.

5. In a process of the character described, consisting in transmitting light beams in the air from different positions and different directions, and then intercepting the same, and arranging the interceptin means .in such pcsitions that thebeams de ected there- 0 from Will form the outline of-a, character.

In testimony whereof I aix my signature.

WLADIMIR W. MITKEWICH. 

